Seventeen-year-old Kanata Amemiya has lost all meaning in life and wishes only for death in an abandoned building. When he loses consciousness, he awakens in Fiore, a fantasy world of magic and monsters. He finds himself in the Mist Village, a remote settlement cursed and isolated from the outside world by a monster-filled forest. Lilia, a silver-haired young guardian, single-handedly protects the village with barrier magic and cold determination. She dismisses Kanata as a 'useless foreigner.'